摘要： Refer to:http://tech.richardrodger.com/2011/04/21/node-js-%E2%80%93-how-to-write-a-for-loop-with-callbacks/http://stackoverflow.com/questions/6789050/node-js-callback-not-workingLet’s also say you have a magical upload function that can do the upload:upload('myfile.ext', function(err){ if( e 阅读全文